An air conditioner

Abstract

The application discloses an air conditioner and relates to the field of household appliance structures, and aims to solve the problem of complex damping and noise reduction structure between a gas-liquid separator and multiple compressors. The outdoor unit of the air conditioner comprises a first compressor assembly, a second compressor assembly and a gas-connection pipe assembly. A first compressor of the first compressor assembly is connected with a first liquid reservoir in a radial direction. A second compressor of the second compressor assembly is connected with a second liquid reservoir in a radial direction. One end of a first connecting pipe of the gas-connection pipe assembly is connected with one end of two second connecting pipes, and the first liquid reservoir and the second liquid reservoir are respectively connected with the other ends of the two second connecting pipes. The air conditioner is used for adjusting indoor air temperature.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of household appliance structure, and particularly relates to an air conditioner. BACKGROUND

[0002] The air conditioner can work on refrigerant through a compressor, so as to exchange heat between indoor heat exchangers and outdoor heat exchangers through flowing refrigerant, and cool or heat indoor air. In order to improve the heat exchange power of the air conditioner, the number of compressors can be increased to effectively improve the flow speed of the refrigerant, thereby bringing greater refrigeration or heating capacity.

[0003] Since each compressor is fixed with a reservoir communicating with each other on the side wall, and each reservoir can be communicated with the gas-liquid separator through a refrigerant pipe. At the same time, the compressor will produce vibration along the tangent direction of rotation in the process of rapid rotation. In order to avoid the vibration of the compressor being transmitted to the gas-liquid separator to cause the vibration of the gas-liquid separator, a vibration and noise reduction structure is usually arranged on each refrigerant pipe, so as to reduce the vibration amplitude and vibration noise near the plurality of compressors, and the structure is complex. SUMMARY

[0004] The purpose of the present application is to provide an air conditioner, which aims to solve the problem of complex vibration and noise reduction structure between the gas-liquid separator and the plurality of compressors.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] Some embodiments of the present application provide an air conditioner, which comprises an outdoor unit, the outdoor unit comprising a first compressor assembly, a second compressor assembly and a gas-liquid connection pipe assembly. The first compressor assembly comprises a first compressor and a first reservoir, and the first compressor is connected to the first reservoir along the radial direction. The second compressor assembly comprises a second compressor and a second reservoir, and the second compressor is connected to the second reservoir along the radial direction. The gas-liquid connection pipe assembly comprises a first connection pipe and two second connection pipes, one end of each of the two second connection pipes is connected to one end of the first connection pipe, and the other end of one of the two second connection pipes is connected to the first reservoir, and the other end of the other second connection pipe is connected to the second reservoir.

[0007] Therefore, in the outdoor unit of the air conditioner provided in the embodiments of the present application, the first accumulator and the second accumulator can be connected to the same first connecting pipe through the second connecting pipe by the arrangement of the gas-liquid separation connecting pipe assembly, and can be connected to the gas-liquid separator through the first connecting pipe, thereby reducing the use amount of the second connecting pipe, reducing the space occupancy of the gas-liquid separation connecting pipe assembly in the outdoor unit, and reducing the production cost. Meanwhile, the first accumulator and the second accumulator can be indirectly connected through the gas-liquid separation connecting pipe assembly. In this way, the reverse vibration in the first compressor assembly and the second compressor assembly can be transmitted along the gas-liquid separation connecting pipe assembly between the first accumulator and the second accumulator, and the first connecting pipe and the second connecting pipe connected in the gas-liquid separation connecting pipe assembly can also buffer and absorb the reverse vibration, thereby effectively reducing the vibration amplitude and vibration noise near the compressors in the outdoor unit, and without additional vibration reduction devices, the structure is simple and effective.

[0008] In some embodiments, the gas-liquid separation connecting pipe assembly further comprises a gas-liquid separation tee joint, the gas-liquid separation tee joint comprising one gas-liquid separation main joint and two gas-liquid separation auxiliary joints fixedly connected to the gas-liquid separation main joint. The gas-liquid separation main joint is connected to one end of the first connecting pipe, and the two second connecting pipes are one-to-one corresponding to the two gas-liquid separation auxiliary joints, and one end of one second connecting pipe is connected to one gas-liquid separation auxiliary joint.

[0009] In some embodiments, along the axial direction of the first accumulator, both ends of each second connecting pipe are located on the same side of the second connecting pipe, and the gas-liquid separation tee joint, the first accumulator and the second accumulator are all located on the same side of the second connecting pipe.

[0010] In some embodiments, the two second connecting pipes and the gas-liquid separation tee joint are axially symmetric relative to the central axis of the gas-liquid separation main joint.

[0011] In some embodiments, the axes of the two second connecting pipes and the axis of the gas-liquid separation main joint are coplanar.

[0012] In some embodiments, along the axial direction of the first accumulator, the first accumulator is located on one side of one of the second connecting pipes, and the gas-liquid separation tee joint is located on the other side of one of the second connecting pipes.

[0013] Along the axial direction of the second accumulator, the second accumulator is located on one side of the other second connecting pipe, and the gas-liquid separation tee joint is located on the other side of the other second connecting pipe.

[0014] In some embodiments, the first compressor and the second compressor are oppositely and spacedly arranged along a direction perpendicular to the axis of the first compressor, the first accumulator and the second accumulator are spacedly arranged and located between the first compressor and the second compressor. The first compressor and the second compressor are spacedly arranged along a first linear direction, the separation plane in which the axis of the first compressor and the axis of the second compressor are located is parallel to the first linear direction, and the first linear direction is perpendicular to the axis of the first compressor. The first accumulator and the second accumulator are located between the first compressor and the second compressor along the first linear direction, and the first accumulator and the second accumulator are spacedly arranged along a second linear direction, the second linear direction intersects the separation plane.

[0015] In some embodiments, the axis of the first compressor is parallel to the axis of the first accumulator, the axis of the second compressor is parallel to the axis of the second accumulator, and the plane in which the axis of the first compressor and the axis of the first accumulator are located is parallel to the plane in which the axis of the second compressor and the axis of the second accumulator are located.

[0016] In some embodiments, the axis of the gas distribution header is parallel to the axis of the first compressor and the axis of the second compressor respectively. The difference between the distance between the axis of the gas distribution header and the axis of the first compressor and the distance between the axis of the gas distribution header and the axis of the second compressor is less than or equal to 3mm.

[0017] In some embodiments, the outdoor unit further comprises an elastic connecting piece, two ends of the elastic connecting piece are respectively in contact with the first accumulator and the second accumulator, and the elastic connecting piece is spacedly arranged with the gas distribution connecting pipe assembly. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 A connection structure schematic diagram of an air conditioner provided by the embodiments of the present application;

[0020] Figure 2 A distribution structure schematic diagram of a plurality of first compressor assemblies provided by the embodiments of the present application;

[0021] Figure 3 An internal structure schematic diagram of an outdoor unit provided by the embodiments of the present application;

[0022] Figure 4 A three-dimensional structure schematic diagram of the first accumulator, the second accumulator and the gas distribution connecting pipe assembly shown in the Figure 3 application.

[0023] Figure 5 Fig. 1 is a perspective view of a first compressor assembly and a second compressor assembly according to the present application; Figure 4 Fig. 2 is a perspective view of a gas-liquid separation three-way joint according to the present application;

[0024] Figure 6 Fig. 3 is a perspective view of a gas-liquid separation connecting pipe assembly according to the present application; Figure 3 Fig. 4 is a top view of the first compressor assembly and the second compressor assembly according to the present application;

[0025] Figure 7 Fig. 5 is a front view of the first compressor assembly and the second compressor assembly according to the present application; Figure 4 Fig. 6 is a front view of the gas-liquid separation connecting pipe assembly according to the present application;

[0026] Figure 8 Fig. 7 is a perspective view of a first accumulator and a second accumulator connected by an elastic connecting member according to the present application; Figure 3 Fig. 8 is another perspective view of the gas-liquid separation connecting pipe assembly according to the present application;

[0027] Figure 9 Fig. 9 is a perspective view of the first accumulator and the second accumulator connected by the elastic connecting member according to the present application; Figure 4 Fig. 10 is a perspective view of the elastic connecting member according to the present application;

[0028] Figure 10 Fig. 11 is a perspective view of a first compressor, a second compressor and an oil separator connected by the gas-liquid separation connecting pipe assembly according to the present application. Figure 9 Fig. 12 is another perspective view of the first compressor, the second compressor and the oil separator connected by the gas-liquid separation connecting pipe assembly according to the present application.

[0029] Figure 11 Fig. 13 is a perspective view of the first accumulator and the second accumulator connected by the elastic connecting member according to the present application. Figure 3 Fig. 14 is a perspective view of the first compressor, the second compressor and the oil separator connected by the gas-liquid separation connecting pipe assembly according to the present application.

[0030] Reference signs:

[0031] 100 - air conditioner;

[0032] 10 - outdoor unit;

[0033] 11 - first compressor assembly; 111 - first compressor; 112 - first accumulator; 113 - first extrusion member;

[0034] 12 - oil separator; 13 - gas-liquid separator; 14 - four-way valve; 15 - outdoor heat exchanger; 16 - casing; 161 - bottom side plate;

[0035] 17 - second compressor assembly; 171 - second compressor; 172 - second accumulator; 173 - second extrusion member;

[0036] 18 - gas-liquid separation connecting pipe assembly; 181 - first connecting pipe; 182 - second connecting pipe; 183 - gas-liquid separation three-way joint; 1831 - gas-liquid separation main joint; 1832 - gas-liquid separation sub joint;

[0037] 191 - elastic connecting member; 1911 - first through hole; 1912 - second through hole;

[0038] 192 - oil separation connecting pipe assembly; 1921 - third connecting pipe; 1922 - fourth connecting pipe; 1923 - oil separation tee joint; 1924 - muffler;

[0039] 20 - indoor unit;

[0040] 21 - indoor heat exchanger. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0042] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specified, the above orientation description can be flexibly arranged in the process of actual application, as long as the relative positional relationship shown in the drawings is met.

[0043] The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0044] It should be noted that in actual application, due to the limitation of equipment precision or installation error, it is difficult to achieve absolute parallelism or perpendicularity. In the present application, the description of perpendicularity, parallelism or co-directionality is not an absolute limitation, but indicates that the structure can be arranged to be perpendicular or parallel within a predetermined error range (such as a 5° deviation up and down), and achieve the corresponding predetermined effect. In this way, the technical effect of the limited features can be maximized, and the corresponding technical solution is easy to implement and has high feasibility.

[0045] In the description of the application, unless specifically defined and limited, the terms "mount", "connected", "connection", "communication", "connected", and "fixed" should be broadly understood, for example, can be non-detachable connection, or detachable connection, or integral connection, or rotatable connection. It can be directly connected or indirectly connected through an intermediate medium. It should be noted that in the embodiments of the application, "connected" or "connected" during the process of circulating refrigerant flow can mean that the two structures are connected through a pipeline and used for circulating refrigerant. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0046] In the embodiments of the application, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, article or device. Without more limitation, the element defined by the sentence "including a…" does not exclude the presence of another identical element in the process, article or device including the element.

[0047] In the embodiments of the application, the words such as "exemplary" or "for example" are used to represent as an example, illustration or description. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the use of "exemplary" or "for example" and the like is intended to present the relevant concept in a specific manner.

[0048] As Figure 1 As shown in the figure, the application provides an air conditioner 100, which includes an outdoor unit 10 and an indoor unit 20. The outdoor unit 10 can include a first compressor assembly 11, an oil separator 12, a gas-liquid separator 13, a four-way valve 14 and an outdoor heat exchanger 15. Exemplarily, one end of the oil separator 12 can be connected with the gas outlet end of the first compressor assembly 11, and the other end can be connected with the first end of the four-way valve 14. One end of the gas-liquid separator 13 can be connected with the gas inlet end of the first compressor assembly 11, and the other end can be connected with the second end of the four-way valve 14. One end of the outdoor heat exchanger 15 can be in communication with the third end of the four-way valve 14. Correspondingly, the indoor unit 20 can include an indoor heat exchanger 21, a throttling device 22 and a fan (not shown in the figure), one end of the indoor heat exchanger 21 can be in communication with the fourth end of the four-way valve 14, and the other end of the indoor heat exchanger 21 can be in communication with the other end of the outdoor heat exchanger 15 through the throttling device 22 such as capillary or electronic expansion valve.

[0049] Thus, under refrigeration conditions, the refrigerant can circulate along the refrigerant pipeline connecting the first compressor assembly 11, the oil separator 12, the four-way valve 14, the outdoor heat exchanger 15, the indoor heat exchanger 21, the four-way valve 14, the gas-liquid separator 13, and the first compressor assembly 11. Through the work done by the first compressor assembly 11, the refrigerant can evaporate and absorb heat at the indoor heat exchanger 21, and liquefy and release heat at the outdoor heat exchanger 15. This completes the heat exchange between the indoor and outdoor environments and helps lower the indoor temperature.

[0050] In heating mode, by adjusting the four-way valve 14, the refrigerant can circulate along the refrigerant pipeline between the first compressor assembly 11, the oil separator 12, the four-way valve 14, the indoor heat exchanger 21, the outdoor heat exchanger 15, the four-way valve 14, the gas-liquid separator 13, and the first compressor assembly 11. Furthermore, through the work of the compressor, the refrigerant can evaporate and absorb heat at the outdoor heat exchanger 15, and liquefy and release heat at the indoor heat exchanger 21. This completes the heat exchange between the indoor and outdoor environments and is used to increase the indoor temperature.

[0051] Under the action of the first compressor assembly 11, efficient cooling or heating can be achieved indoors through the circulation of the refrigerant. In order to facilitate efficient heat exchange between the indoor heat exchanger 21 and the outdoor heat exchanger 15 and the indoor and outdoor air respectively, fans can be installed close to the indoor heat exchanger 21 and the outdoor heat exchanger 15 respectively to drive the air to flow quickly through the indoor heat exchanger 21 and the outdoor heat exchanger 15, so as to further improve the heat exchange efficiency.

[0052] like Figure 2 As shown, Figure 2 This is a schematic diagram illustrating the distribution structure of multiple first compressor assemblies 11 provided in an embodiment of this application. Exemplarily, a first compressor assembly 11 may include a first compressor 111 and a first liquid receiver 112 communicating with the first compressor 111. The first compressor 111 may be a rotary compressor or a scroll compressor; there is no limitation in this regard. In this embodiment, the axis of the first compressor 111 may be defined as parallel to the vertical direction. In practical applications, to save installation space, each first liquid receiver 112 may be fixedly installed close to each first compressor 111 and communicated with that first compressor 111. For example, each first compressor 111 may have one first liquid receiver 112 fixedly installed on its side wall in a radial direction (perpendicular to the axis).

[0053] The outlet of the first compressor 111 can be communicated with the oil separator 12, and the inlet of the first compressor 111 can be communicated with the gas-liquid separator 13 through the first liquid accumulator 112. In this way, the first compressor 111 can compress the low-temperature and low-pressure gaseous refrigerant from the gas-liquid separator 13 through the compression structure rotating around the axis internally, and can output the high-temperature and high-pressure gaseous refrigerant from the outlet of the first compressor 111, so as to liquefy and release heat (cooling condition) at the outdoor heat exchanger 15 through the oil separator 12 and the four-way valve 14, or to liquefy and release heat (heating condition) at the indoor heat exchanger 21 through the four-way valve 14.

[0054] During the process, the first liquid accumulator 112 communicated between the first compressor 111 and the gas-liquid separator 13 can be used for further gas-liquid separation and filtration of the refrigerant flowing into the first compressor 111, and store the liquid refrigerant, so as to avoid the liquid strike accident caused by the liquid refrigerant entering the first compressor 111. At the same time, through the buffering of the first liquid accumulator 112, the flow impact of the refrigerant can be buffered, and the sound reduction and vibration reduction effects can be achieved.

[0055] It should be noted that if the air conditioner 100 has a larger cooling or heating power requirement, the heat exchange area of the indoor heat exchanger 21 and the outdoor heat exchanger 15 needs to be increased, and the rated power of the first compressor assembly 11 also needs to be increased correspondingly, so as to maintain a higher heat exchange efficiency of the air conditioner 100 in the cooling or heating condition. Based on this, the rated power of the first compressor 111 installed in the outdoor unit 10 can be increased (such as replacing a compressor with larger power), or more first compressor assemblies 11 can be connected in parallel between the gas-liquid separator 13 and the oil separator 12.

[0056] As shown in FIG. 1, Figure 2 In some embodiments, since the power of each first compressor 111 is fixed, the rated cooling or heating power of the air conditioner 100 can be improved by installing multiple first compressor assemblies 11. When multiple first compressor assemblies 11 are installed, the multiple first compressors 111 can be distributed in the left-right direction at intervals, and the lower end of each first compressor 111 can be fixedly connected to the shell or bearing of the outdoor unit 10 (as shown in FIG. 1) through a buffer pad. Figure 1 The same side of the multiple first compressors 111 is fixedly connected with a first liquid accumulator 112 respectively. The first liquid accumulator 112 can be fixedly connected with the corresponding first compressor 111 through a buckle, or the first liquid accumulator 112 can be fixedly connected with the corresponding first compressor 111 directly through welding or bonding.

[0057] Thus, each first compressor 111 can be connected with a corresponding first accumulator 112 through a refrigerant pipeline. For example, the lower end of each first compressor 111 can be connected with the lower end of a corresponding first accumulator 112 through a refrigerant pipeline, and the first compressor 111 can be connected with the gas-liquid separator 13 through a refrigerant pipeline, and the first accumulator 112 can be connected with the oil separator 12 through a refrigerant pipeline. However, since the first compressor 111 needs to rotate continuously around its axis in the working state, the first compressor 111 will vibrate along its circumference. Especially for the rotor compressor, since the rotating workpiece of the rotor compressor can be an eccentric structure, the first compressor 111 will have a larger vibration amplitude. Thus, the first accumulator 112 fixedly connected with each first compressor 111 will be driven and vibrate synchronously by the first compressor 111. In order to avoid the vibration of the first compressor assembly 11 affecting the gas-liquid separator 13 and the oil separator 12, a refrigerant pipeline can be separately connected between each first compressor 111 and the gas-liquid separator 13, and a refrigerant pipeline can be separately connected between each first accumulator 112 and the gas-liquid separator 13. In this way, the separately arranged refrigerant pipelines can absorb the vibration of the first compressor 111 or the first accumulator 112 through a longer pipeline structure. Moreover, a noise reduction and vibration reduction structure can be installed on each refrigerant pipeline to further absorb the vibration energy of the first compressor 111 or the first accumulator 112, so as to achieve the purpose of reducing the transmission of the vibration amplitude of the first compressor assembly 11 and the noise generated by the vibration.

[0058] However, in the above embodiment, if the refrigerant pipelines connecting the gas-liquid separator 13 and each first accumulator 112 are separately arranged, the connection length of the refrigerant pipelines will be greatly increased. Moreover, since a vibration reduction and noise reduction structure needs to be installed between each refrigerant pipeline, the complexity of the refrigerant pipeline structure will be further increased, which will result in insufficient space near the first compressor assembly 11 and increased production cost. Moreover, since the plurality of first accumulators 112 are located on the same side of each first compressor 111, when the eccentric rotors of each compressor 111 rotate to the position close to the connected first accumulator 112 at the same time, the vibrations of the plurality of first compressors 111 will be superimposed in the left-right direction (i.e. the tangent direction of the rotor at this time), thereby greatly increasing the vibration amplitude of the plurality of first compressor assemblies 11 and the vibration noise generated thereby.

[0059] Referring to Figure 3 , Figure 3An internal structure schematic diagram of an outdoor unit 10 is provided in the embodiments of the present application. The outdoor unit 10 can include a housing 16, which can include a bottom side plate 161 located at the bottom, and further include a plurality of side side plates (not shown in the figure) connected with the bottom side plate 161 and a top side plate (not shown in the figure) oppositely arranged with the bottom side plate 161, so that the housing 16 can enclose a cavity for installing and protecting the internal structures of the outdoor unit 10, such as the first compressor assembly 11, the oil separator 12, the gas-liquid separator 13, the four-way valve 14, the outdoor heat exchanger 15 and the outdoor fan (not shown in the figure) shown in Figure 1 It should be noted that for the top side plate and the plurality of side side plates, they can be at least two baffle structures with air vents, so that the cavity in the housing 16 can exchange heat with the outdoor heat exchanger 15 installed in the cavity under the driving of the outdoor fan through the two air vents. The bottom side plate 161 can be used to install and fix the structures such as the first compressor assembly 111, the gas-liquid separator 13 or the oil separator 12.

[0060] For example, in order to increase the structural strength of the bottom side plate 161, a plurality of reinforcing ribs can be punched on the bottom side plate 161 to stably support the structures such as the first compressor assembly 111, the gas-liquid separator 13 or the oil separator 12. In addition, in other embodiments, a plurality of load-bearing plates spaced apart in the left-right direction can be connected and installed below the plurality of side side plates for installing and supporting the structures such as the first compressor assembly 111, the oil separator 12 and the gas-liquid separator 13. Alternatively, the structures such as the first compressor assembly 111, the oil separator 12 and the gas-liquid separator 13 can be directly installed on the ground, and a plurality of side side plates and a top side plate connected with the upper ends of the side side plates can be connected on the ground to form the cavity of the outdoor unit 10. This is not limited.

[0061] To solve the above problems, the embodiments of the present application continue to refer to Figure 3The outdoor unit 10 may further include a second compressor assembly 17. The structure of the second compressor assembly 17 is approximately the same as that of the first compressor assembly 11. For example, each second compressor assembly 17 may include a second compressor 171 and a second receiver 172. The second compressor 171 may be fixedly installed radially to the second receiver 172, and the lower end of the second compressor 171 and the lower end of the second receiver 172 may be connected through a refrigerant pipeline. The number of first compressor assemblies 11 is the same as the number of second compressor assemblies 17, and there may be one or more. Each first compressor assembly 11 and one second compressor assembly 17 form a group. Each first compressor assembly 11 contains one first receiver 112 and one first compressor 111, and correspondingly, each second compressor assembly 17 may contain one second compressor 171 and one second receiver 172.

[0062] Thus, as Figure 3 As shown, when installing the first compressor assembly 11 and the second compressor assembly 17, each first compressor assembly 11 and each second compressor assembly 17 constitute a compressor assembly. The first compressor 111 can be positioned opposite and spaced apart from the second compressor 171 along a left-right direction (i.e., a first straight line direction), and the first liquid receiver 112 and the second liquid receiver 172 can be positioned between the first compressor 111 and the second compressor 171 respectively along a left-right direction. When the gas-liquid separator 13 is connected, the outdoor unit 10 may further include a gas-liquid separator connection pipe assembly 18, each gas-liquid separator connection pipe assembly 18 being adapted to one first compressor assembly 11 and one second compressor assembly 17.

[0063] Reference Figure 4 , Figure 4 for Figure 3 The diagram shows a three-dimensional structure of the first liquid reservoir 112, the second liquid reservoir 172, and the gas-distribution connecting pipe assembly 18. The gas-distribution connecting pipe assembly 18 may include a first connecting pipe 181, two second connecting pipes 182, and a gas-distribution tee connector 183. Wherein, as... Figure 5 As shown, Figure 5 for Figure 4A perspective structural schematic diagram of the gas distribution tee joint 183 shown in FIG. 1. The gas distribution tee joint 183 can include a gas distribution main joint 1831 and two gas distribution sub-joints 1832. The upper end of the gas distribution main joint 1831 can be connected to the lower ends of the two gas distribution sub-joints 1832, i.e., fixedly connected, and connected in communication for flowing refrigerant. The lower end of the gas distribution main joint 1831 can be connected to one end of the first connecting pipe 181, and the two gas distribution sub-joints 1832 can be connected to the two second connecting pipes 182 one by one, i.e., one end of one second connecting pipe 182 can be connected to the upper end of one gas distribution sub-joint 1832. At the same time, the other end of one second connecting pipe 182 can be connected to the first liquid reservoir 112, and the other end of the other second connecting pipe 182 can be connected to the second liquid reservoir 172. And the end of the first connecting pipe 181 away from the gas distribution main joint 1831 can be used to connect the gas-liquid separator 13. Thus, the low-temperature and low-pressure refrigerant can flow to the first liquid reservoir 112 and the second liquid reservoir 172 through the first connecting pipe 181, the gas distribution tee joint 183 and the two second connecting pipes 182, respectively.

[0064] Therefore, by providing the gas distribution connecting pipe assembly 18, the first liquid reservoir 112 and the second liquid reservoir 172 can be connected to the same first connecting pipe 181 through the second connecting pipes 182, and can be connected to the gas-liquid separator 13 through the first connecting pipe 181, thereby reducing the use amount of the second connecting pipes 182, and facilitating to reduce the space occupancy rate of the gas distribution connecting pipe assembly 18 and the production cost. At the same time, since the first compressor 111 and the second compressor 171 are oppositely and spacedly arranged along the left-right direction, the first liquid reservoir 112 and the second liquid reservoir 172 spacedly arranged between the first compressor 111 and the second compressor 171 can be indirectly connected through the gas distribution connecting pipe assembly 18 along the radial direction.

[0065] Referring to Figure 6 , Figure 6 For Figure 3 A top view of the first compressor assembly 11 and the second compressor assembly 17 shown in FIG. 1. Taking the first compressor 111 and the second compressor 171 synchronously rotating clockwise, and the first liquid reservoir 112 and the second liquid reservoir 172 as the reference points (the positions of starting to rotate) as examples. When the rotors of the first compressor 111 and the second compressor 171 start to rotate or rotate to the positions of the reference points, respectively, the vibration directions of the first compressor assembly 11 and the second compressor assembly 17 at this time are Figure 6 the tangent directions at the A1 and A2 points shown in FIG. 1. When the rotors of the first compressor 111 and the second compressor 171 rotate 180° relative to the reference points, respectively, the vibration directions of the first compressor assembly 11 and the second compressor assembly 17 at this time are Figure 6the tangential direction of the two points B1 and B2 shown in FIG. 1. When the first compressor assembly 11 and the second compressor assembly 17 are installed, the plane in which the axis of the first compressor 111 and the axis of the first liquid accumulator 112 lie can be made approximately parallel to the plane in which the axis of the second compressor 171 and the axis of the second liquid accumulator 172 lie, which corresponds to Figure 6 the two diameters A1B1 and A2B2 shown in FIG. 1. In this way, the first compressor assembly 11 and the second compressor assembly 17 vibrate in opposite directions, so that the vibrations between the first compressor assembly 11 and the second compressor assembly 17 in the tangential direction described above can be partially or completely offset by the direct or indirect contact between the first liquid accumulator 112 and the second liquid accumulator 172, without the need to install additional vibration reduction structures on the gas-liquid connection pipe assembly 18. This reduces the vibration amplitude and vibration noise between the multiple compressor assemblies in the outdoor unit 10, and also reduces the length of the connection pipe between the multiple compressor assemblies and the gas-liquid separator 13, which is conducive to simplifying the internal structure of the outdoor unit 10 and further compressing the occupied space of the outdoor unit 10.

[0066] It should be noted that, in order to completely offset the vibrations between the first compressor assembly 11 and the second compressor assembly 17 in the tangential direction of rotation, the vibration of the first compressor assembly 11 and the second compressor assembly 17 needs to be equal in size and completely opposite in direction at any time. In addition, the gas-liquid connection pipe assembly 18 including one first connection pipe 181 and two second connection pipes 182 can be used to connect the gas-liquid separator 13, the first liquid accumulator 112 and the second liquid accumulator 172, respectively. At this time, the installation positions of the first liquid accumulator 112 and the second liquid accumulator 172 can be flexibly set, and the gas-liquid connection pipe assembly 18 can simplify the length of the pipe connection, and also has the effect of partially buffering and absorbing part of the vibrations of the first compressor assembly 11 and the second compressor assembly 17, that is, it is conducive to simplifying the layout of the vibration reduction and noise reduction structure.

[0067] For example, by improving the structural consistency of the first compressor assembly 11 and the second compressor assembly 17, or making the first compressor assembly 11 and the second compressor assembly 17 completely identical in structure, the vibration of the first compressor assembly 11 and the second compressor assembly 17 can be equal in size.

[0068] In the installation of the first compressor assembly 11 and the second compressor assembly 17, the first compressor assembly 11 and the second compressor assembly 17 can be installed at the same horizontal level. Taking the first accumulator 112 and the second accumulator 172 as tank structures respectively, the axes of the first accumulator 112, the second accumulator 172, the first compressor 111 and the second compressor 171 are arranged in pairs in parallel, and the plane in which the axis of the first compressor 111 and the axis of the first accumulator 112 are located can be parallel to the plane in which the axis of the second compressor 171 and the axis of the second accumulator 172 are located, and the plane in which the axis of the first accumulator 112 and the axis of the second accumulator 172 are located can be perpendicular to the plane in which the axis of the first compressor 111 and the axis of the second compressor 171 are located. Figure 6 The A1B1 shown in FIG. 1 is parallel to the A2B2. In addition, in the rotation control of the first compressor 111 and the second compressor 171, the first compressor 111 and the second compressor 171 can be rotated in the direction shown by the O1A1 and the O2A2 respectively, which are the reference lines of the first compressor 111 and the second compressor respectively. Figure 6 The O1A1 and the O2A2 shown in FIG. 1 are the reference lines of the first compressor 111 and the second compressor respectively. In this way, the vibration directions of the first compressor assembly 11 and the second compressor assembly 17 during rotation can always be opposite.

[0069] However, in actual application, due to the existence of processing technology and assembly error, the above conditions can be as close as possible in the installation of the first compressor assembly 11 and the second compressor assembly 17, so as to facilitate the maximization of the degree of cancellation of the vibration between the first compressor assembly 11 and the second compressor assembly 17.

[0070] For example, taking the first accumulator 112 and the second accumulator 172 as tank structures respectively, and the first compressor 111 and the second compressor 171 having rotors rotating around the axes respectively, in the first compressor assembly 11, the axis of the first accumulator 112 installed close to the first compressor 111 is approximately parallel to the axis of the first compressor 111. In the second compressor assembly 17, the axis of the second accumulator 172 installed close to the second compressor 171 is approximately parallel to the axis of the second compressor 171. In the corresponding installation of one first compressor assembly 11 and one second compressor assembly 17, the first accumulator 112 and the second accumulator 172 can be installed between the first compressor 111 and the second compressor 171 along the left-right direction respectively. Among them, the first accumulator 112 and the second accumulator 172 close to each other can be in direct contact, can be arranged in the left-right direction (i.e. the first straight line direction) with a certain interval, and can also be arranged in the second straight line direction (i.e. the direction shown by the A1A2 connecting line in FIG. 1) with a certain interval. Figure 6

[0071] ​The axis of the first compressor 111 and the axis of the second compressor 171 are approximately parallel, and the partition plane (a plane parallel to the left-right and up-down directions at the same time) where the two axes are located can be parallel to the first linear direction or coplanar. In addition, the second linear direction intersects the partition plane, that is, the angle between the second linear direction and the partition plane can be greater than 0 and less than or equal to 90°. It should be noted that when Figure 6 the line direction of A1A2 is perpendicular to the line direction of B1A1 or A2B2, the direction of the line of A1A2 can coincide with the two tangents at the points A1 and A2. The vibrations between the first liquid accumulator 112 and the second liquid accumulator 172 can be mutually canceled on the gas distribution connecting pipe assembly 18 in the same direction (i.e. the second linear direction), and no additional component force is generated, which is beneficial to maximize the cancellation degree of the vibrations between the first compressor assembly 11 and the second compressor assembly 17.

[0072] In some embodiments, as Figure 6 shown, since the gas distribution tee joint 183 is located between the first compressor 111 and the second compressor 171 in the left-right direction, during the installation of the gas distribution tee joint 183, the axis of the gas distribution main joint 1831 (as Figure 5 shown) can be arranged parallel to the axis of the first compressor 111 and the axis of the second compressor 171 respectively, so as to minimize the additional component force of the vibration during transmission. At the same time, the difference between the spacing of the axis of the gas distribution main joint 1831 and the spacing of the axis of the first compressor 111 and the spacing of the axis of the second compressor 171 can be less than or equal to 6 mm. That is, after installation, the gas distribution main joint 1831 can be located at the position close to the midpoint of the first compressor 111 and the second compressor 171 in the left-right direction, as Figure 6 shown, the two points of the two radii of the same circle with O1 and O2 as the centers can coincide with the axis of the gas distribution main joint 1831. In addition, the gas distribution tee joint 183 can also be adjusted to be offset to the left by 3 mm or to the right by 3 mm, which is within a reasonable error range. Since the gas distribution tee joint 183 and the two second connecting pipes 182 are also axisymmetric structures, that is, the gas distribution tee joint 183 is also located in the middle part of the first liquid accumulator 112 and the second liquid accumulator 172 in the second linear direction. It is beneficial to make the symmetrical distribution of the vibration stress on the second connecting pipe 182, the gas distribution tee joint 183 and the first connecting pipe 181, so as to improve the buffering and absorption effect of the vibration stress.

[0073] In order to install and fix the first liquid accumulator 112 and the second liquid accumulator 172, as Figure 4As shown, the first compressor assembly 11 can further include a first extrusion member 113, which can be sleeved on the outer side of the first liquid reservoir 112 along the circumference of the first liquid reservoir 112 and can extrude and fix the first liquid reservoir 112. Meanwhile, the first extrusion member 113 can be fixedly connected with the side wall of the first compressor 111 through rivets, screws or welding, etc. so that the first liquid reservoir 112 can be installed and fixed on the side wall of the first compressor 111 along the radial direction of the first compressor 111. Correspondingly, the second compressor assembly 17 can further include a second extrusion member 173, which can be sleeved on the outer side of the second liquid reservoir 172 along the circumference of the second liquid reservoir 172 and can extrude and fix the second liquid reservoir 172. Meanwhile, the second extrusion member 173 can be fixedly connected with the side wall of the second compressor 171 through rivets, screws or welding, etc. so that the second liquid reservoir 172 can be installed and fixed on the side wall of the second compressor 171 along the radial direction of the second compressor 171.

[0074] In the above embodiments, a buffer pad can be filled between the first liquid reservoir 112 and the first extrusion member 113 to absorb part of the vibration between the first compressor 111 and the first liquid reservoir 112. Correspondingly, a buffer pad can also be filled between the second liquid reservoir 172 and the second extrusion member 173 to also absorb part of the vibration between the second compressor 171 and the second liquid reservoir 172. In this way, it is beneficial to reduce the vibration amplitude between the first compressor assembly 11 and the second compressor assembly 17.

[0075] In some embodiments, continuing to refer to Figure 4 When the gas-liquid separation connecting pipe assembly 18 is installed, the upper end of the first liquid reservoir 112 and the second liquid reservoir 172 can be used to communicate with the gas-liquid separator 13. In this way, the two ends of each second connecting pipe 182 can be bent downward at the same time to form an arc-shaped bending structure or a zigzag bending structure, so that the two end portions of each second connecting pipe 182 are located on the lower side of the second connecting pipe 182. That is, the second connecting pipe 182 can be approximately C-shaped, U-shaped or V-shaped. Taking two second connecting pipes 182 as inverted U-shaped structures as an example, one end of one second connecting pipe 182 downward can be connected with the upper end of the first liquid reservoir 112, and the other end downward can be connected with the upper end of one gas-liquid separation sub connector 1832. Correspondingly, one end of the other second connecting pipe 182 downward can be connected with the upper end of the second liquid reservoir 172, and the other end downward can be connected with the upper end of the other gas-liquid separation sub connector 1832.

[0076] Thus, after the two second connecting pipes 182 are installed in communication with the two gas distribution sub-connectors 1832 and the first liquid accumulator 112 and the second liquid accumulator 172, the first liquid accumulator 112, the second liquid accumulator 172 and the gas distribution tee connector 183 can be located on the same side of the two second connecting pipes 182. For example, when the upper end faces of the first liquid accumulator 112 and the second liquid accumulator 172 are in communication with the two second connecting pipes 182, the first liquid accumulator 112, the second liquid accumulator 172 and the gas distribution tee connector 183 are located on the lower side of the two second connecting pipes 182.

[0077] It should be noted that in the embodiments of the present application, the two second connecting pipes 182 installed on the same side of the gas distribution tee connector 183 can form an axisymmetric whole structure together with the gas distribution tee connector 183 to facilitate the use of the gas distribution tee connector 183 to converge and cancel the vibration on the first compressor assembly 11 and the second compressor assembly 17. At this time, the axis of symmetry of the above whole structure can be the central axis of the gas distribution main connector 1831. In addition, when the two second connecting pipes 182 and the first connecting pipe 181 are connected through the gas distribution tee connector 183, the axis of the end of each second connecting pipe 182 close to the gas distribution sub-connector 1832 can coincide with the axis of the connected gas distribution sub-connector 1832, and the axis of the end of the first connecting pipe 181 close to the gas distribution main connector 1831 can coincide with the axis of the gas distribution main connector 1831.

[0078] In the embodiments of the present application, since the first liquid accumulator 112 and the second liquid accumulator 172 are transmitted through the two second connecting pipes 182 and the gas distribution tee connector 183 as a medium in the process of converging and canceling the vibration. In the process of connecting the first liquid accumulator 112 and the second liquid accumulator 172 through the two second connecting pipes 182 and the gas distribution tee connector 183, the axes of the two symmetrically arranged second connecting pipes 182 can be a straight line or a curved curve.

[0079] Thus, for example, when the two second connecting pipes 182 are curved structures, the axis of each second connecting pipe 182 can be bent in a plane, that is, the axis of each second connecting pipe 182 can form a plane. As shown in FIG. 6, the axis of each second connecting pipe 182 can be a straight line, and the axis of the first connecting pipe 181 can be a curved line. Figure 7 Figure 7 For example, as shown in FIG. 7, the axis of each second connecting pipe 182 can be a straight line, and the axis of the first connecting pipe 181 can be a straight line. Figure 4 ​One front view allows the axes of the two second connecting pipes 182 to be coplanar with the axis of the gas separator main connector 1831. Thus, when the first reservoir 112 and the second reservoir 172 experience opposite vibrations, during transmission through the two second connecting pipes 182 and the gas separator tee connector 183, one vibration can converge with and cancel out the other opposite vibration during transmission through the second connecting pipe 182, the gas separator tee connector 183, or even the other second connecting pipe 182. In other words, the two vibrations act as mutual buffering forces, effectively reducing the vibration intensity between the first reservoir 112 and the second reservoir 172. During this process, since the axes of the two second connecting pipes 182 are coplanar with the axis of the gas separator main connector 1831, the vibration transmission and buffering paths can both lie in the same plane, minimizing additional force components during vibration transmission and thus improving vibration buffering efficiency.

[0080] If the two second connecting pipes 182 are of a straight type, meaning the axes of the second connecting pipes 182 extend in a straight line, then the axes of the two second connecting pipes 182 can be made coplanar with the axis of the gas separator main connector 1831. This achieves the same effect.

[0081] In practical applications, due to the existence of processing technology and assembly errors, in order to facilitate the production and processing of the gas distribution connecting pipe assembly 18, the axes of the two second connecting pipes 182 can be made to have an angle of less than 180° between the two planes formed by the axes of the gas distribution main connector 1831, respectively. While ensuring the connection strength at both ends of each second connecting pipe 182, this helps to reduce production costs and improve production efficiency.

[0082] In the above embodiment, since the end of the main gas separator 1831 of the gas separator tee 183, away from the auxiliary gas separator 1832, is oriented downwards, during the installation of the first connecting pipe 181 between the main gas separator 1831 and the gas-liquid separator 13, starting from the main gas separator 1831, the first connecting pipe 181 can first extend downwards, then bend and extend towards the gas-liquid separator 13. When approaching the gas-liquid separator 13, the first connecting pipe 181 can bend and extend upwards. After exceeding the height of the gas-liquid separator 13, the first connecting pipe 181 can bend downwards and extend to connect with the upper end of the gas-liquid separator 13. Thus, by extending and bending the first connecting pipe 181, the deformation of the first connecting pipe 181 can effectively isolate the vibration transmission path between the gas-liquid separator 13 and the first compressor assembly 11 and the second compressor assembly 17.

[0083] In some other embodiments, such as Figure 8 As shown, Figure 8 for Figure 3The diagram shows another three-dimensional structure of the gas-distribution connecting pipe assembly 18. In this assembly, the ends of the two gas-distribution auxiliary connectors 1832 of the gas-distribution tee 183, away from the main gas-distribution connector 1831, can be positioned downwards. Between the two auxiliary connectors 1832 and the first liquid reservoir 112 and the second liquid reservoir 172, the two ends of each second connecting pipe 182 can be distributed vertically. That is, the shape of the second connecting pipe 182 can be approximately a Z-shaped structure, a straight structure, a circular arc structure less than 1 / 4 of its diameter, or a zigzag structure with a bending angle greater than 90°. Thus, the two ends of one second connecting pipe 182 can be positioned vertically opposite each other and connected to the first liquid reservoir 112 and one of the auxiliary connectors 1832, respectively. Similarly, the two ends of the other second connecting pipe 182 can also be positioned vertically opposite each other and connected to the second liquid reservoir 172 and the other auxiliary connector 1832, respectively. So that the gas separator tee 183 can be located above the second connecting pipe 182, the first liquid reservoir 112 can be located below one of the second connecting pipes 182, and the second liquid reservoir 172 can be located below the other connected second connecting pipe.

[0084] Thus, during the installation of the first connecting pipe 181, it can be directly installed above the gas separator tee connector 183. For example, starting from the gas separator main connector 1831, the first connecting pipe 181 connected to it can first extend upwards. After exceeding the height of the gas-liquid separator 13, the first connecting pipe 181 can bend towards the gas-liquid separator 13 and extend above it. Subsequently, the first connecting pipe 181 can bend downwards and connect to the upper end of the gas-liquid separator 13. In this way, since the first connecting pipe 181 installed between the gas separator main connector 1831 and the gas-liquid separator 13 also has a bending structure, the deformation buffering of the first connecting pipe 181 can provide a certain degree of isolation for vibration transmission between the gas-liquid separator 13 and the first compressor assembly 11 and the second compressor assembly 17. Meanwhile, since the two ends of the first connecting pipe 181 are connected to the gas separator main connector 1831 and the upper end of the gas-liquid separator 13 respectively, it is beneficial to reduce the amount of the first connecting pipe 181 used, thereby reducing production costs.

[0085] It should be noted that, unless otherwise specified, in the embodiments of this application, the gas distribution tee connector 183 can be... Figure 5 The illustrated tee structure, i.e., the axis of the main gas distributor 1831, can be parallel to the axes of the two auxiliary gas distributors 1832. Furthermore, the gas distributor tee 183 can be a reducing tee structure, meaning the inner diameter of the main gas distributor 1831 is larger than the inner diameter of each auxiliary gas distributor 1832; correspondingly, the inner diameter of the first connecting pipe 181 is also larger than the inner diameter of each second connecting pipe 182.

[0086] In other embodiments, the gas distribution tee joint 183 can also be a T-shaped tee structure or a Y-shaped tee structure. In the Y-shaped tee structure, the connection structure between the two gas distribution sub-joints 1832 can also be approximately arc-shaped. The present application does not limit this.

[0087] In some embodiments, as shown in Figure 9 , the outdoor unit can further include an elastic connecting piece 191, both ends of which can be in contact with the first liquid accumulator 112 and the second liquid accumulator 172, respectively. When the first connecting pipe 181 is located below the gas distribution main joint 1831, i.e., between the first liquid accumulator 112 and the second liquid accumulator 172. Referring to Figure 10 , a first through hole 1911 is arranged in the middle of the elastic connecting piece 191, and the inner diameter of the first through hole 1911 can be greater than the outer diameter of the first connecting pipe 181. In this way, the first connecting pipe 181 located between the first liquid accumulator 112 and the second liquid accumulator 172 can pass through the first through hole 1911 and be spaced apart from the elastic connecting piece 191. In this way, by the elastic deformation of the elastic connecting piece 191 itself, the elastic connecting piece 191 supported between the first liquid accumulator 112 and the second liquid accumulator 172 can buffer and absorb the relative vibration between the first liquid accumulator 112 and the second liquid accumulator 172, thereby further reducing the vibration intensity of the first liquid accumulator 112 and the second liquid accumulator 172.

[0088] When installing the elastic connecting piece 191, continuing to refer to Figure 10 , both ends of the elastic connecting piece 191 can be provided with a second through hole 1912, respectively, and the inner diameter of the second through hole 1912 is smaller than the outer diameter of the first liquid accumulator 112 (as shown in Figure 9 ) and the second liquid accumulator 172. In this way, the first liquid accumulator 112 and the second liquid accumulator 172 can be directly sleeved in the two second through holes 1912, respectively, and in interference fit with the inner wall of the second through hole 1912, thereby realizing the contact connection between the elastic connecting piece 191 and the first liquid accumulator 112 and the second liquid accumulator 172, respectively. The number of elastic connecting pieces 191 can be one or more, which is not limited. When the number of elastic connecting pieces 191 is one, both ends of the elastic connecting piece 191 can be in contact with the upper end of the first liquid accumulator 112 and the second liquid accumulator 172, respectively, or can be in contact with the lower end or middle part of the first liquid accumulator 112 and the second liquid accumulator 172, respectively.

[0089] The elastic connecting piece 191 can be made of a material with good elastic performance, such as a plastic with small hardness, rubber, or silica gel. In this way, the relative vibration between the first liquid reservoir 112 and the second liquid reservoir 172 can be well buffered and absorbed by the elastic deformation of the elastic connecting piece 191 itself. Referring to Figure 9 Since the first extrusion piece 113 and the second extrusion piece 173 can be respectively sleeved on the first liquid reservoir 112 and the second liquid reservoir 172, after the first liquid reservoir 112 and the second liquid reservoir 172 are installed in place, the elastic connecting piece 191 can be directly sleeved on the upper end of the first liquid reservoir 112 and the upper end of the second liquid reservoir 172, which is very convenient.

[0090] It should be noted that during the installation of the elastic connecting piece 191, the second through hole 1912 can also not be formed at both ends of the elastic connecting piece 191. For example, the end faces of the elastic connecting piece 191 can be directly abutted with the side walls of the first liquid reservoir 112 and the second liquid reservoir 172, respectively, and the elastic connecting piece 191 can be in an elastic compression state, which can also be used to buffer and absorb the vibration between the first liquid reservoir 112 and the second liquid reservoir 172. Moreover, if the gas-liquid three-way joint 183 and the first connecting pipe 181 are respectively located above the first liquid reservoir 112 and the second liquid reservoir 172, since the elastic connecting piece 191 is installed between the first liquid reservoir 112 and the second liquid reservoir 172, the installed elastic connecting piece 191 can be located below the first connecting pipe 181 at this time, and the elastic connecting piece 191 and the gas-liquid connecting pipe assembly 18 are spaced apart. At this time, the first through hole 1911 for avoiding the first connecting pipe 181 does not need to be formed on the elastic connecting piece 191.

[0091] In some embodiments, as Figure 11As shown, the outdoor unit 10 can further include an oil connection pipe assembly 192, which can include a third connection pipe 1921, two fourth connection pipes 1922, and an oil three-way joint 1923. The oil three-way joint 1923 can be arranged in the same manner as the gas connection joint 183, for example, and can include an oil main joint (not shown in the figure) and two oil auxiliary joints, with one end of the two oil auxiliary joints connected to the same end of the oil main joint. One end of the two fourth connection pipes 1922 can be connected to the upper end of the first compressor 111 and the upper end of the second compressor 171, respectively, and the other end of the two fourth connection pipes 1922 can be connected to the ends of the two oil auxiliary joints away from the oil main joint. Meanwhile, the two ends of the third connection pipe 1921 can be used to connect the main joint and the upper end of the oil separator 12, respectively. In this way, the medium-temperature and medium-pressure gaseous refrigerant flowing out of the first compressor 111 and the second compressor 171 can flow into the same oil separator 12 through the oil connection pipe assembly 192. Moreover, by arranging the oil three-way joint 1923, the two fourth connection pipes 1922 can be merged into the third connection pipe 1921, thereby reducing a length of the fourth connection pipe 1922 equivalent to the length of the third connection pipe 1921. In addition to reducing the amount of refrigerant pipe used, the oil three-way joint 1923 can also absorb the reverse vibration of the relatively placed first compressor 111 and second compressor 171, for example, by converging the two fourth connection pipes 1922.

[0092] Moreover, continuing to refer to Figure 11 , the oil connection pipe assembly 192 can further include a silencer 1924, which can be a pipe structure with a larger diameter and mass, installed between the third connection pipe 1921 and the oil main joint, thereby buffering and absorbing the vibration transmitted between the oil connection pipe assembly 192, to partially or completely isolate the vibration transmission between the oil separator 12 and the first compressor 111 and the second compressor 171, and further weaken the vibration noise intensity on the oil connection pipe assembly 192. Compared with the technical solution in the related art, in which two refrigerant connection pipes are directly connected between the first compressor 111, the second compressor 171, and the oil separator 12, and two silencers are used for vibration damping and noise reduction, respectively, by arranging the oil connection pipe assembly 192, only one silencer 1924 can be used to achieve the vibration damping and noise reduction effect of the entire oil connection pipe assembly 192, which is simple in structure and helps to reduce the implementation difficulty of solving the pipe vibration stress and noise, and improve the work efficiency.

[0093] It should be noted that the specific structure of the fourth connecting pipe 1922 and the oil separation tee joint 1923 in the oil separation connecting pipe assembly 192 can be directly set by referring to the structure of the gas separation connecting pipe assembly 18, or flexibly adjusted on the basis of the corresponding structure to adapt to the first compressor 111, the second compressor 171 and the oil separator 12. For the gas separation connecting pipe assembly 18, one end of the two second connecting pipes 182 can be directly fixed and communicated with one end of the first connecting pipe 181 to ensure the connection strength and sealing effectiveness of the pipeline structure, that is, the gas separation tee joint 183 is not required to be additionally installed, and the structure is simpler. In the oil separation connecting pipe assembly 192, the oil separation tee joint 1923 can also not be installed, and this is not limited.

[0094] In the description of the present specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0095] The above is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An air conditioner characterized by comprising: The air conditioner comprises an outdoor unit, the outdoor unit comprising: a first compressor assembly comprising a first compressor and a first accumulator, the first compressor being connected to the first accumulator in a radial direction; a second compressor assembly comprising a second compressor and a second accumulator, the second compressor being connected to the second accumulator in a radial direction; and a gas distribution connecting pipe assembly comprising a first connecting pipe and two second connecting pipes, one end of each of the two second connecting pipes being connected to one end of the first connecting pipe, the other end of one of the two second connecting pipes being connected to the first accumulator, and the other end of the other second connecting pipe being connected to the second accumulator, the first compressor and the second compressor being oppositely and spacedly arranged in a direction perpendicular to the axis of the first compressor, the second accumulator being spacedly arranged between the first compressor and the second compressor; the first compressor and the second compressor being spacedly arranged in a first linear direction, a separation plane in which the axis of the first compressor and the axis of the second compressor are located being parallel to the first linear direction, and the first linear direction being perpendicular to the axis of the first compressor; the first accumulator and the second accumulator being located between the first compressor and the second compressor in the first linear direction, and the first accumulator and the second accumulator being spacedly arranged in a second linear direction, the second linear direction intersecting the separation plane.

2. The air conditioner of claim 1, wherein the gas distribution connecting pipe assembly further comprising a gas distribution tee joint, the gas distribution tee joint comprising one gas distribution main joint and two gas distribution auxiliary joints fixedly connected to the gas distribution main joint and in communication with the gas distribution main joint; the gas distribution main joint being connected to the one end of the first connecting pipe, the two second connecting pipes corresponding to the two gas distribution auxiliary joints one by one, and the one end of one second connecting pipe being connected to one gas distribution auxiliary joint.

3. The air conditioner of claim 2, wherein in the axial direction of the first accumulator, the two ends of each second connecting pipe being located on the same side of the second connecting pipe, and the gas distribution tee joint, the first accumulator and the second accumulator being located on the same side of the second connecting pipe.

4. The air conditioner of claim 2, wherein the two second connecting pipes and the gas distribution tee joint being an axial symmetric structure relative to the central axis of the gas distribution main joint.

5. The air conditioner of claim 4, wherein the axes of the two second connecting pipes and the axis of the gas distribution main joint being coplanar.

6. The air conditioner of claim 2, wherein in the axial direction of the first accumulator, the first accumulator being located on one side of one second connecting pipe, and the gas distribution tee joint being located on the other side of one second connecting pipe; in the axial direction of the second accumulator, the second accumulator being located on one side of the other second connecting pipe, and the gas distribution tee joint being located on the other side of the other second connecting pipe.

7. The air conditioner of claim 1, wherein the axis of the first compressor being parallel to the axis of the first accumulator, the axis of the second compressor being parallel to the axis of the second accumulator, and the plane in which the axis of the first compressor and the axis of the first accumulator are located being parallel to the plane in which the axis of the second compressor and the axis of the second accumulator are located.

8. The air conditioner according to any one of claims 2 to 6, characterized by The axis of the gas distribution main joint is parallel to the axis of the first compressor and the axis of the second compressor respectively. The difference between the spacing between the axis of the gas distribution main joint and the axis of the first compressor and the spacing between the axis of the gas distribution main joint and the axis of the second compressor is less than or equal to 3mm.

9. The air conditioner of claim 1, wherein The outdoor unit further comprises an elastic connecting member, two ends of the elastic connecting member are in contact with the first liquid accumulator and the second liquid accumulator respectively, and the elastic connecting member is spaced apart from the gas distribution connecting pipe assembly.

Images